QuickGuide to Macro Speedlite MR-14EX and MT-24EX

10. CH - Channel button. Selects flash channel (1 – 4)
when unit is in wireless slave mode.
11. PILOT – Pilot lamp and test fire button
12. Flash Exposure Confirmation lamp
13. Power switch –Turns power on and off. SE position
enables “Save Energy” mode, which automatically
powers down the flash after 90 seconds of inactivity.
To cancel SE mode, press the PILOT button.
QuickGuide to Macro Speedlite
MR-14EX and MT-24EX
This QuickGuide reviews how to use either of Canon’s
two Macro Speedlites: the MR-14EX and MT-24EX. The
primary difference is between them is that the MR-14EX
has two circular flash tubes permanently mounted opposite
each other onto the Flash Ring, while the MT-24EX has
two removable and adjustable flash heads that snap into
miniature flash shoes.
Attaching/Detaching the Flash Ring
The Flash Ring attaches directly to the following lenses:
• EF 50mm f/2.5 Compact Macro
• EF 100mm f/2.8 Macro USM
• EF 100mm f/2.8 Macro (now discontinued)
• MP-E 65mm f/2.8 1-5x
The EF 100mm f/2.8L IS Macro requires Macro Lite
Adapter 67C. The EF 180mm f/3.5L Macro requires
Macro Lite Adapter 72C (each sold separately). Macro
Lite adapters are available in sizes 52mm, 58mm, 67mm
and 72mm.
To attach the Flash Ring, press in on the release
button(s) while placing the ring onto the lens. When the
ring is in place, let go of the button(s). Make sure the
ring is firmly attached. To detach the ring, reverse the
procedure.
to all camera exposure modes, including Manual. Press
the MODE button to toggle between E-TTL and M. The
flash is in E-TTL mode when ETTL appears in the upper
left corner of the LCD.
To operate the flash in E-TTL mode:
1. Turn the power switch to ON or SE.
2. Set the camera to the ISO and exposure mode of
your choice. If the camera is set to Auto ISO, the ISO
setting will vary as follows:
Tv or Av or P or CA or Full Auto: The camera will
automatically set the ISO speed at 400 (or 800 on
Rebel T3).
Av Fill-in Flash: If the pre-flash detects overexposure at ISO 400 (or 800), the camera will reduce
the ISO to as low as 100.
P or CA or Full Auto & bounce flash: If the preflash detects under-exposure at ISO 400 (or 800),
the camera will increase the ISO speed to as high as
1600.
3. Focus and release the shutter.
4. If there was enough light for a correct exposure
the green Flash Exposure Confirmation Lamp will
illuminate for 3 seconds. If not, the lamp will not
illuminate.
Control Layout
1. LCD ILLUMINATOR/C.Fn – LCD illuminator/Custom
Function button
2. MODE – Flash mode button. Toggles between ETTL/
TTL and M (manual) flash mode.
3. + : Increase button. Increases flash exposure
compensation. Press SEL/SET first.
4. − : Decrease button. Applies “minus” flash exposure
compensation. Press SEL/SET first.
5. SEL/SET – Select/Set button. For selecting and
setting features and functions.
6. LAMP – Focusing lamp button
7. ◄ - Left arrow button. Increases power to left flash
tube (A) relative to right (B).
8. ►- Right arrow button. Increases power to right flash
tube (B) relative to left (A).
9. RATIO – Flash ratio button. Cycles ratio between OFF,
A:B, and A:B C. When A is displayed in Manual flash
mode, the flash output displayed (1/1 thru 1/64) is
for flash tube A. When B is displayed in Manual flash
mode, the flash output displayed is for flash tube B.
Selecting camera exposure mode
Set your camera to whatever exposure mode you prefer:
P, Av, Tv, or M. Choose Manual mode when you want
small apertures for maximum depth-of-field combined
with a fast shutter speed to help minimize blur and
separate the subject from the background. (Light falls
off more rapidly at short distances, therefore the closer
the flash is to the subject, the darker the background
exposure will be unless you either increase the shutter
speed/ambient light exposure or light the background
separately.)
Basic E-TTL Auto operation
When the flash unit is set to E-TTL it will automatically
emit a brief pre-flash prior to the actual flash exposure.
Based on the pre-flash measurement, it will then adjust
the flash duration to provide proper exposure based
on a combination of flash-to-subject distance, subject
reflectivity, aperture, shutter speed, and ISO. This applies
E-TTL Flash Ratio Control
Because the MR-14EX and MT-24EX have two flash tubes
(A and B) you have the option of firing A and B at equal
output (1:1), firing A and B at an unequal ratio (1:2, 1:4, 2:1,
etc.), or firing either A or B independently.
Equal output
1. Press the RATIO button once. The ratio display will
appear.
2. Confirm that the ratio indicator is in the center, below
1:1. If not, press either the ◄ or ► arrow as needed
to move the bar back to the center.
A:B ratio
1. Press the RATIO button once. The ratio display will
appear.
2. Press the ◄ arrow toward flash A (left) to increase
its power. Press the ► arrow to increase power of
flash B (right). Each press will increase the ratio by a
half-stop. An A:B ratio of 2:1 indicates that flash A will
output twice as much light (one stop) as B. A ratio of
4:1 indicates four times as much (two stops). A ratio of
8:1 indicates eight times as much (3 stops).
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E-TTL OPERATION
E-TTL Flash Ratio Control (continued)
The reverse also applies. For example, an A:B ratio of 1:4
indicates that flash B will output four times as much light
as A.
Turning off A or B (firing one tube only)
1. Press the RATIO button once. The ratio display will
appear.
2. Press either the ◄ or ► button as needed to move
the ratio indicator all the way to the left (A) or right (B).
The ratio scale will disappear, leaving only the flash
tube firing icon for the side you have selected.
Wireless E-TTL Flash
The MR-14EX and MT-24EX are fully compatible with
the Canon Speedlite wireless flash system. Because the
MR-14EX/MT-24EX already comprise units A and B of a
wireless flash group, you would normally set any additional
unit(s) as a slave assigned to group C. Be sure to set A:B
C ratio. The Macro Lite’s A and B tubes will light the main
subject. You can use Slave C either to light the background
only or create accent lighting, according to your preference.
If you activated FLASH C.Fn 5-1, you can instead assign
any additional slave units to supplement slave groups A
and B. Slaves assigned to A and B will not otherwise fire
unless C.Fn 5-1 is active.
MANUAL OPERATION
Manual Flash Mode Settings
In the manual flash mode, you can adjust the flash output
from 1/1 (full) to 1/64 power in whole-stop increments.
When shooting in manual mode you must either use a flash
exposure meter or pre-test the flash exposure. The camera
will not automatically adjust the exposure. The flash tubes
can be fired in one of three configurations:
1. Fire both flash tubes at the same output
2. Fire flash tube A at a different output from flash tube B
3. Fire only one of the flash tubes (A or B)
To fire both tubes at equal output:
1. Set the camera’s shooting mode to Av or M.
2. Press the <MODE> button and change the mode from
ETTL to M.
3. Press the <SEL/SET> button. The flash output display
will blink.
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4. Press the < + > or <−> button to set the desired flash
output. Each time you press the button, the flash
output will increase or decrease by one stop.
5. Press the <SEL/SET> button again to lock in your
choice.
To fire both tubes at a different output:
1. Follow steps 1 – 2 above
2. Press the RATIO button and select A:B
3. Press the ◄ or ► button to select flash tube A or B;
selected group is underlined
4. Press the < + > or <−> button to set the desired flash
output.
5. Press the <SEL/SET> button again to lock in your
choice, and move to next flash group
Wireless Manual Flash
To set up a wireless flash system (compatible with EOS
digital SLRs):
1. Press the Macro Lite’s <MODE> button and select
"M (Manual)".
2. Press the <RATIO> button and select RATIO A:B
C. Each time you press the button, the selection will
change in the following order: OFF → RATIO A : B
→ RATIO A : B C
3. Press the <C H.> button to select the channel you
wish to use. Select any channel from 1 to 4. All flash
units under your control must be set to the same
channel.
Setting flash output for A and B and Slave C
With [RATIO A:B C] displayed on the master unit, set the
flash output for flash tubes A and B, then set the flash
output for slave C. For the setting procedure, refer to
“Manual Flash Mode Settings” above.
MODE-INDEPENDENT FEATURES
Modeling flash
Press the depth-of-field preview button on your camera to
trigger modeling flash. (Note: Rebel T3 requires C.Fn 8-1
be set on-camera.)
Focusing lamps
Press the LAMP button to turn on the focusing lamps. They
will automatically shut off in approximately 20 seconds. To
turn the lamps off manually, press the LAMP button again.
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Flash Exposure Compensation (FEC)
You can set FEC up to ±3 stops in 1/3-stop increments (or
1/2-stop increments with some cameras). To set FEC:
1. Press the SEL/SET button repeatedly until the [+/−]
icon appears on the LCD. The icon and FEC amount
will blink.
2. Press the + or – button to set the FEC amount.
3. Press the SEL/SET button to lock in your choice.
Flash Exposure Bracketing (FEB)
Three flash shots can be bracketed up to ±3 stops in
1/3-stop increments (or 1/2-stop increments with some
cameras) in the following order: Correct exposure,
decreased exposure, and increased exposure. FEB is
canceled automatically after all three bracketed flash
exposures have been completed. To set FEB:
1. Press the SEL/SET button repeatedly until the
[BRACKETING] icon appears on the LCD. The icon
and FEC amount will blink.
2. Press the + or – button to set the FEB amount.
3. Press the SEL/SET button to lock in your choice.
Flash Sync Options
By default, the flash fires in synchronization with the first
shutter curtain when the shutter is fully open. With Secondcurtain Sync, the flash fires immediately before the
second shutter curtain closes at the end of the exposure.
High-Speed Sync (FP Flash) allows the Macro Lite to
sync at all shutter speeds. Although this reduces power
output, this can be a benefit when you are working at close
distances or if you are using the flash for flash-fill lighting.
To set either option:
1. Press the <+> and <−> buttons simultaneously to
select the flash sync option of your choice. The icon
for the corresponding mode will appear on the LCD
screen as well as in your camera’s viewfinder. Each
simultaneous press of these two buttons will change
the sync setting.
2. To switch back to standard 1st-curtain sync, press the
<+> and <−> buttons simultaneously until neither the
2nd-curtain sync nor high-speed sync icons are visible
on the LCD.
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